The correct answer Is C, Harriet Tubman
Answer: It resisted new ideas from Europe.
Answer: Below
Explanation: Europeans viewed the spread of Islam as a threat and actively worked to stop it. Military conquests by the Arab Empire and traders of Islamic faith were the primary means for spreading Islam to Africa, Europe, and Asia.
Either a primary source could be unavailable or a primary source could be extremely biased. For example, if a researcher was looking at King George, they might not want to use the diary of someone who despised King George as a big part of their research.